130BA186.11
P 3-03
P 3-02
Sum of all
references
P 3-00 Reference Range= [0] Min to Max
Resulting reference
Illustration 15.4 Sum of All References
15.2 Scaling of Preset References
Preset references are indicated by units, which can be RPM,
m/s, bar, and so on. The preset references are scaled
according to the following rules:
•
When
parameter 3-00 Reference Range
=
[0] Min to
Max
,
parameter 3-02 Minimum Reference
is the
minimum reference (0%), and
parameter 3-03 Maximum Reference
is the
maximum reference (100%). 50% reference is
found halfway between these 2 values.
•
When
parameter 3-00 Reference Range
=
[1] -Max to
+Max
,
parameter 3-02 Minimum Reference
is
ignored.
Parameter 3-03 Maximum Reference
is the
maximum reference (100%), which is used for the
+Max value (+100%) and the -Max value (-100%).
50% reference is found halfway between these 2
values.
15.3 Scaling of Analog and Pulse
References, and Feedback
References and feedback are scaled from analog and pulse
inputs in the same way. The only difference is that a
reference above or below the specified minimum and
maximum endpoints (P1 and P2 in
) are
clamped, whereas feedback above or below is not.
(RPM)
Resource output
Resource
input
Terminal X low
Terminal X
high
Low reference/feedback value
High reference/feedback
value
130BA181.10
-1500
-6
8
(V)
1500
-10
10
P1
P2
0
-600
Illustration 15.5 Scaling of Analog and Pulse References
(RPM)
Resource output
Resource
input
Terminal X low
Terminal X
high
Low reference/feedback value
High reference/feedback
value
130BA182.10
-1500
-6
8
(V)
1500
-10
10
P1
P2
0
-600
Illustration 15.6 Scaling of Analog and Pulse Feedback
The following parameters define the endpoints P1 and P2,
depending on which analog or pulse input is used.
Handling of References
VLT
®
Parallel Drive Modules
138
Danfoss A/S © 6/2016 All rights reserved.
MG37N102
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